Each column in the formatted and single display can only display up to 259 characters. This is a a limitation imposed by the native Windows implementation of tables, which the Eclipse platform uses, and is recognised as a known issue on the Eclipse platform.
Workaround
When the total number of characters exceeds 32,000 in total, column headers start to get truncated. This is a known limitation imposed by Eclipse's use of the Windows implementation of the table control.
Workaround
Depending on the type of records of resource being edited, the alignment of the text value display and the corresponding hex value display can be not aligned. This is due to the fact that some text values occupy multiple bytes for the corresponding text in UNICODE (eg. DBCS characters, UNICODE characters).